16905997056 has 72 divisors (see below), whose sum is σ = 48455758960. Its totient is φ = 5201842176.

The previous prime is 16905997001. The next prime is 16905997091. The reversal of 16905997056 is 65079950961.

16905997056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×16905997056³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16905996987 and 16905997005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836671 + ... + 856638.

Almost surely, 2^16905997056 is an apocalyptic number.

16905997056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16905997056 is an abundant number, since it is smaller than the sum of its proper divisors (31549761904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16905997056 is a wasteful number, since it uses less digits than its factorization.

16905997056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693341 (or 1693327 counting only the distinct ones).

The product of its (nonzero) digits is 4592700, while the sum is 57.

The spelling of 16905997056 in words is "sixteen billion, nine hundred five million, nine hundred ninety-seven thousand, fifty-six".